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Divide with an Area Model is a free printable Grade 4 math worksheet on finding a missing side by splitting the area into two parts, aligned to Common Core standard 4.NBT.B.6. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 22 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Divide with an Area Model

4.NBT.B.6

NameDate

Read carefully, then work out the answer.

1.A rectangle has an area of 348 square units. One side is 4 units long. Split the area into 320 and 28. How long is the other side?
Answer:
2.A rectangle has an area of 385 square units. One side is 7 units long. Split the area into 350 and 35. How long is the other side?
Answer:
3.A rectangle has an area of 112 square units. One side is 7 units long. Split the area into 70 and 42. How long is the other side?
Answer:
4.A rectangle has an area of 744 square units. One side is 8 units long. Split the area into 720 and 24. How long is the other side?
Answer:
5.A rectangle has an area of 792 square units. One side is 9 units long. Split the area into 720 and 72. How long is the other side?
Answer:
6.A rectangle has an area of 136 square units. One side is 4 units long. Split the area into 120 and 16. How long is the other side?
Answer:

LessonPrint · 4.NBT.B.6 · Set 22 · free to copy for classroom use

Answer key — Divide with an Area Model

Set 22. Prints on its own sheet.

  1. 1.320 ÷ 4 = 80; 28 ÷ 4 = 7; 80 + 7 = 87 units
  2. 2.350 ÷ 7 = 50; 35 ÷ 7 = 5; 50 + 5 = 55 units
  3. 3.70 ÷ 7 = 10; 42 ÷ 7 = 6; 10 + 6 = 16 units
  4. 4.720 ÷ 8 = 90; 24 ÷ 8 = 3; 90 + 3 = 93 units
  5. 5.720 ÷ 9 = 80; 72 ÷ 9 = 8; 80 + 8 = 88 units
  6. 6.120 ÷ 4 = 30; 16 ÷ 4 = 4; 30 + 4 = 34 units

Last reviewed 2026-09-05. Aligned to 4.NBT.B.6 of the Common Core State Standards for Mathematics.